MCP1642B/D High-Current Synchronous Boost Converter Evaluation Board User’s Guide
DS50002353A-page 16
2015 Microchip Technology Inc.
2.2
GETTING STARTED
The MCP1642B/D High-Current Synchronous Boost Converter Evaluation Board is
fully assembled and tested to evaluate and demonstrate the MCP1642B/D Switching
Boost Regulators. For in-depth evaluation, this board requires the use of external lab
supplies and load.
2.2.1
Power Input and Output Connection
2.2.1.1
POWERING THE MCP1642B/D HIGH-CURRENT SYNCHRONOUS
BOOST CONVERTER EVALUATION BOARD
Soldered test points are available for input voltage connections. The maximum input
voltage should not exceed the output voltage. The output voltage will not remain in
regulation for input voltages that are greater than the output voltage.
The MCP1642B/D High-Current Synchronous Boost Converter Evaluation Board has
two independent circuit applications, one using the MCP1642B-ADJ MSOP-8 package,
while the other one uses the MCP1642D-33 DFN-8 package.
Soldered test points are available to connect a load. The switch peak current limit will
provide a safe maximum current value. The maximum output current for the converters
will vary with input and output voltages; refer to Figure 2-1 or the MCP1642B/D data
sheet for more information on the maximum output current.
2.2.1.2
BOARD POWER-UP PROCEDURE
1. Connect the power supply/battery as shown in Figure 2-3. The positive terminal
must be connected to V
IN
and the negative terminal to GND.
2. The enable pin (EN) is by default connected to V
IN
and, in this situation the
converter is enabled and the output voltage can be measured on the V
OUT
and
GND terminals. To put the device in Shutdown mode, connect the EN pin to
GND, by putting the jumper on the first two pins of J9 and J10, respectively.
3. Connect system load to V
OUT
and GND terminals; maximum load varies with
input and output voltage. Connect the (+) side of the load to V
OUT
and the
negative (-) load to ground (GND).
4. Additional test points are available to visualize different signals (SW, PG, EN).
FIGURE 2-3:
MCP1642 Evaluation Board Setup.
A-Meter
V-Meter
1.5V Cell/
Resistive
(165
Ω
/1W
)
A-Meter
V-Meter
SW
Power Good
Test Point
Test Point
Power Supply
-
+
Enable/Disable
Devices
